code: def test_working(self):
      assert True
  
file_path: interpret-text/test/unit/test_classical_explainer.py
imports: from interpret_text.experimental.classical import ClassicalTextExplainer
  from sklearn.preprocessing import LabelEncoder
  from utils_test import setup_mnli_test_train_split
  import pickle
  import os
label_desc: Use image node_id 1 for calling the TestClassicalExplainer obj's underlying member method code with example usage: obj.test_working() without return types